Apple added 1.1 per cent as Samsung Electronics acknowledged it was adjusting production of the Galaxy Note 7 smartphone due to reports that replacement units for devices with exploding lithium-ion batteries are also catching fire.

Dow members ExxonMobil and Chevron both rose about one percent as US oil prices climbed above US$50 a barrel.

Five minutes into trade, the Dow Jones Industrial Average stood at 18,364.04, up 0.7 per cent.

The broad-based S&P 500 advanced 0.6 per cent to 2,165.96, while the tech-rich Nasdaq Composite Index gained 0.6 per cent to 5,324.55.